<template>
    <router-view class="router-view" v-slot="{ Component }">
      <transition :name="transitionName">
        <component :is="Component" />
      </transition>
    </router-view>
</template>

<script>
import { reactive, toRefs, onMounted } from "vue";
import { useRouter } from "vue-router";
export default {
  setup() {
    const router = useRouter();
    const state = reactive({
      transitionName: "slide-left",
    });
    router.beforeEach((to, from) => {
      if (to.meta.index > from.meta.index) {
        state.transitionName = "slide-left"; // 向左滑动
      } else if (to.meta.index < from.meta.index) {
        // 由次级到主级
        state.transitionName = "slide-right";
      } else {
        state.transitionName = ""; // 同级无过渡效果
      }
    });

    // onMounted(()=>{
    //   router.push({name: 'Index'})
    // })

    return {
      ...toRefs(state),
    };
  },
};
</script>

<style lang="scss">
/* 全局样式 */
:root {
  --army-green: #4A6B2A;
  --deep-green: #2C3E1A;
  --military-gold: #D4AF37;
  --light-bg: #F8F8F5;
  --card-bg: #FFFFFF;
}

body {
  font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--light-bg);
  color: #333;
  margin: 0;
  padding: 0;
  font-size: 14px;
}

/* 安全区域 */
.app-container {
  padding: 0 15px;
  max-width: 100%;
  overflow-x: hidden;
}
html, body {
  height: 100%;
  overflow-x: hidden;
  overflow-y: scroll;
}
#app {
  height: 100%;
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  // text-align: center;
  color: #2c3e50;
}

.router-view{
    width: 100%;
    height: auto;
    position: absolute;
    top: 0;
    bottom: 0;
    margin: 0 auto;
    -webkit-overflow-scrolling: touch;
}

.slide-right-enter-active,
.slide-right-leave-active,
.slide-left-enter-active,
.slide-left-leave-active{
    height: 100%;
    will-change: transform;
    transition: all 500ms;
    position: absolute;
    backface-visibility: hidden;
}
.slide-right-enter{
    opacity: 0;
    transform: translate3d(-100%, 0, 0);
}
.slide-right-leave-active{
    opacity: 0;
    transform: translate3d(100%, 0, 0);
}
.slide-left-enter{
    opacity: 0;
    transform: translate3d(100%, 0, 0);
}
.slide-left-leave-active{
    opacity: 0;
    transform: translate3d(-100%, 0, 0);
}

.van-badge--fixed {
  z-index: 1000;
}
</style>
